Burris rings and bases have long been favorites of custom gun makers because of their strength, beauty, and fit. It's easy to recognize Burris' leadership role in scope mounting systems when you consider the myriad of innovative designs and manufacturing processes that result in rock-solid performance. Each ring is made from a solid piece of steel with the top and bottom half perfectly mated. Zee rings with no moving parts are the best fitting and most positive gripping Weaver-style ring made.